Honeywell UDC3200 series, Руководство по эксплуатации продукта

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Input Calibration
5.3 Preliminary Information
Disconnect the Field Wiring
Tag and disconnect any field wiring connected to the input (#1 or #2) terminals on the
rear of the controller.
XXXX
R
+
_
Input 1
Connections
25 R
26 +
27 –
R
+
Input 2
Connections
22 R
23 +
24 –
_
Input 1 Input 2
Figure 5-1 Input 1 and Input 2 Wiring Terminals
Equipment Needed
Table 5-2 lists the equipment you will need to calibrate the specific types of inputs that
are listed in the table. You will need a screwdriver to connect these devices to your
controller.
Table 5-2 Equipment Needed
Type of Input Equipment Needed
Thermocouple
Inputs (Ice Bath)
Thermocouple
Inputs (T/C Source)
RTD (Resistance
Thermometer
Device)
Milliampere,
Millivolt, Volts, and
Radiamatic
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source such as a millivolt source.
•
•
•
•
Thermocouple extension wire that corresponds with the type of
thermocouple that will be used with the controller input.
Two insulated copper leads for connecting the thermocouple
extension wire from the ice baths to the mV source.
Two containers of crushed ice.
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source such as a millivolt source.
•
•
•
•
•
•
•
•
Thermocouple extension wire that corresponds with the type of
thermocouple that will be used with controller input.
A decade box, with at least ± 0.02 % accuracy, capable of providing
stepped resistance values over a minimum range of 0 to 1650 ohms
with a resolution of 0.001 ohm.
Three insulated copper leads of equal length for connecting the
decade box to the controller.
A calibrating device with at least ± 0.02 % accuracy for use as a
signal source.
Two insulated copper leads for connecting the calibrator to the
controller.
Place current source at zero before switching ON.
Do not switch current sources OFF/ON while connected to the
UDC3200 input.
12/04 UDC3200 Universal Digital Controller Product Manual 135